Finding the Fourth Proportional to 9,422.22, 13,003.70 and 5,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,422.22 : 13,003.70 = 5,389.42 : x
2. Step 2: Convert to fraction form
   9,422.22/13,003.70 = 5,389.42/x
3. Step 3: Cross multiply
   9,422.22x = 13,003.70 × 5,389.42
4. Step 4: Simplify right side
   9,422.22x = 70,082,341.40
5. Step 5: Solve for x
   x = 70,082,341.40/9,422.22
6. Step 6: Final answer
   x = 7,437.99